53
53
Sep 19, 2013
09/13
by
Adrian Andrada
texts
eye 53
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We study complex product structures on nilpotent Lie algebras, establishing some of their main properties, and then we restrict ourselves to 6 dimensions, obtaining the classification of 6-dimensional nilpotent Lie algebras admitting such structures. We prove that any complex structure which forms part of a complex product structure on a 6-dimensional nilpotent Lie algebra must be nilpotent in the sense of Cordero-Fern\'andez-Gray-Ugarte. A study is made of the torsion-free connection...
Source: http://arxiv.org/abs/math/0610768v1
39
39
Apr 27, 2010
04/10
by
Andrada, Randy
texts
eye 39
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228, viii p. : 23 cm
Topic: St. Mary's College of California
42
42
Sep 22, 2013
09/13
by
Adrian Andrada
texts
eye 42
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comment 0
A study is made of real Lie algebras admitting a hypersymplectic structure, and we provide a method to construct such hypersymplectic Lie algebras. We use this method in order to obtain the classification of all hypersymplectic structures on four-dimensional Lie algebras, and we describe the associated metrics on the corresponding Lie groups.
Source: http://arxiv.org/abs/math/0310462v1
20
20
Aug 8, 2020
08/20
by
Andrada, Ana
texts
eye 20
favorite 0
comment 0
6
6.0
Jan 16, 2021
01/21
by
Daniel Andrada (danielandrada)
data
eye 6
favorite 0
comment 0
Customized version of http://www.thingiverse.com/thing:74322 Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=74322
Topics: 2D Art, customized, stl, thingiverse
4
4.0
Jun 30, 2018
06/18
by
Adrian Andrada; Raquel Villacampa
texts
eye 4
favorite 0
comment 0
Let $\mathfrak{g}$ be a $2n$-dimensional unimodular Lie algebra equipped with a Hermitian structure $(J,F)$ such that the complex structure $J$ is abelian and the fundamental form $F$ is balanced. We prove that the holonomy group of the associated Bismut connection reduces to a subgroup of $SU(n-k)$, being $2k$ the dimension of the center of $\mathfrak{g}$. We determine conditions that allow a unimodular Lie algebra to admit this particular type of structures. Moreover, we give methods to...
Topics: Mathematics, Differential Geometry
Source: http://arxiv.org/abs/1412.7092
548
548
Dec 6, 2014
12/14
by
Francisco Rades y Andrada
texts
eye 548
favorite 0
comment 0
Topic: bub_upload
Source: http://books.google.com/books?id=HU92EkA9ntgC&hl=&source=gbs_api
52
52
Sep 17, 2013
09/13
by
Adrian Andrada; Simon Salamon
texts
eye 52
favorite 0
comment 0
A study is made of real Lie algebras admitting compatible complex and product structures, including numerous 4-dimensional examples. If g is a Lie algebra with such a structure then its complexification has a hypercomplex structure. It is shown in addition that g splits into the sum of two left-symmetric subalgebras. Interpretations of these results are obtained that are relevant to the theory of both hypercomplex and hypersymplectic manifolds and their associated connections.
Source: http://arxiv.org/abs/math/0305102v1
3
3.0
May 21, 2021
05/21
by
López Andrada, Alejandro, 1957-
texts
eye 3
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comment 0
48
48
Jan 13, 2017
01/17
by
Andrés Fernández de Andrada
audio
eye 48
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Procedente de librivox
Topics: Andrés Fernández de Andrada, Epístola moral a Fabio
3
3.0
Jun 29, 2018
06/18
by
A. Andrada; M. Origlia
texts
eye 3
favorite 0
comment 0
We study the existence of lattices in almost abelian Lie groups that admit left invariant locally conformal K\"ahler or locally conformal symplectic structures in order to obtain compact solvmanifolds equipped with these geometric structures. In the former case, we show that such lattices exist only in dimension $4$, while in the latter case we provide examples of such Lie groups admitting lattices in any even dimension.
Topics: Differential Geometry, Mathematics
Source: http://arxiv.org/abs/1611.02089
0
0.0
May 18, 2022
05/22
by
Fernández de Andrada, Andrés
texts
eye 0
favorite 1
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xxxii, 144 p. ; 20 cm
Topics: Fernández de Andrada, Andrés. Epístola moral a Fabio, Fernández de Andrada, Andrés --...
303
303
Jan 22, 2017
01/17
by
Jacinto Freire De Andrada
texts
eye 303
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Book Source: Digital Library of India Item 2015.101848 dc.contributor.author: Jacinto Freire De Andrada dc.date.accessioned: 2015-07-01T17:48:22Z dc.date.available: 2015-07-01T17:48:22Z dc.date.digitalpublicationdate: 0000-00-00 dc.date.citation: 1664 dc.identifier.barcode: 2020050081796 dc.identifier.origpath: /data8/upload/0209/273 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/101848 dc.description.scanningcentre: RMSC, IIIT-H dc.description.slocation:...
Topic: RMSC
117
117
Sep 18, 2013
09/13
by
Adrian Andrada; Isabel Dotti
texts
eye 117
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In this paper we give a procedure to construct hypersymplectic structures on $R^{4n}$ beginning with affine-symplectic data on $R^{2n}$. These structures are shown to be invariant by a 3-step nilpotent double Lie group and the resulting metrics are complete and not necessarily flat. Explicit examples of this construction are exhibited.
Source: http://arxiv.org/abs/math/0401294v1
204
204
Jan 22, 2017
01/17
by
Andrada, Jacinto Freire De
texts
eye 204
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Book Source: Digital Library of India Item 2015.22873 dc.contributor.author: Andrada, Jacinto Freire De dc.contributor.other: K. Peter, Wyche Tr. dc.date.accessioned: 2015-06-24T17:26:34Z dc.date.available: 2015-06-24T17:26:34Z dc.date.digitalpublicationdate: 2007-09-02 dc.date.citation: 1664 dc.identifier.barcode: 4990010198437 dc.identifier.origpath: /data2/upload/0052/589 dc.identifier.copyno: 1 dc.identifier.uri: http://www.new.dli.ernet.in/handle/2015/22873 dc.description.scanningcentre:...
Topic: C-DAK
3
3.0
Jun 30, 2018
06/18
by
Adrián Andrada; Marcos Origlia
texts
eye 3
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We study left-invariant locally conformally K\"ahler structures on Lie groups, or equivalently, on Lie algebras. We give some properties of these structures in general, and then we consider the special cases when its complex structure is bi-invariant or abelian. In the former case, we show that no such Lie algebra is unimodular, while in the latter, we prove that if the Lie algebra is unimodular, then it is isomorphic to the product of $\mathbb R$ and a Heisenberg Lie algebra.
Topics: Mathematics, Differential Geometry
Source: http://arxiv.org/abs/1404.7376
842
842
Dec 16, 2014
12/14
by
Andrada, Francisco de, 1540-1614
texts
eye 842
favorite 3
comment 0
[19], 113, 134, 131, 155 h. ; Fol
Topics: bub_upload, Juan III, Rey de Portugal, 1521-1557 -- Obras anteriores a 1800, Portugal -- Historia...
Source: http://books.google.com/books?id=KuAEw2jD_REC&hl=&source=gbs_api
3
3.0
Jun 30, 2018
06/18
by
Simion Breaz; Andrada Cî mpean
texts
eye 3
favorite 0
comment 0
We study the class of rings $R$ with the property that for $x\in R$ at least one of the elements $x$ and $1+x$ are tripotent.
Topics: Rings and Algebras, Commutative Algebra, Mathematics
Source: http://arxiv.org/abs/1704.01303
136
136
Sep 28, 2012
09/12
by
Bravo Villasante, Carmen; Andrada, Carmen
texts
eye 136
favorite 6
comment 0
A selection of fables from Spanish and Spanish American authors
Topics: Children's poetry, Spanish, Children's poetry, Spanish American, Fables, Spanish, Spanish: Adult...
53
53
Oct 23, 2014
10/14
by
Nyakatura, John A; Andrada, Emanuel
texts
eye 53
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comment 0
This article is from Frontiers in Zoology , volume 11 . Abstract Introduction: Head-bobbing in birds is a conspicuous behaviour related to vision comprising a hold phase and a thrust phase. The timing of these phases has been shown in many birds, including quail, to be coordinated with footfall during locomotion. We were interested in the biomechanics behind this phenomenon. During terrestrial locomotion in birds, the trunk is subjected to gait-specific vertical oscillations. Without...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3987125
221
221
Jul 11, 2011
07/11
by
Andrada, Joaquim Carlos Paiva de
texts
eye 221
favorite 0
comment 0
Book from Project Gutenberg: Relatorio de uma viagem ás terras dos Landins
Source: http://www.gutenberg.org/ebooks/34041
190
190
Jul 13, 2011
07/11
by
Andrada, Joaquim Carlos Paiva de
texts
eye 190
favorite 0
comment 0
Book from Project Gutenberg: Relatorio de uma viagem ás terras do Changamira
Source: http://www.gutenberg.org/ebooks/34040
20
20
Apr 3, 2019
04/19
by
Andrada Castel Blanco, Manoel de
texts
eye 20
favorite 1
comment 0
2984 p. : 21 cm
Topic: Spain -- Politics and government -- 1516-1700
364
364
Nov 30, 2014
11/14
by
Francisco de Rades y Andrada
texts
eye 364
favorite 1
comment 0
Topic: bub_upload
Source: http://books.google.com/books?id=D9EXoGqvtrUC&hl=&source=gbs_api
588
588
Apr 29, 2016
04/16
by
Francisco : de Rades y Andrada
texts
eye 588
favorite 0
comment 0
Topic: bub_upload
Source: http://books.google.com/books?id=NyLa9jUtbRoC&hl=&source=gbs_api
0
0.0
Mar 10, 2022
03/22
by
Amy Nivette; Christof Nägel; Andrada Stan
data
eye 0
favorite 0
comment 0
The current study aims to critically review the use of factorial survey experiments used in research on police procedural justice and legitimacy. This review focuses particularly on assessing the methodological characteristics of between-subjects experiments, in particular documenting the scenarios and treatments described in each vignette, the extent to which confounds are embedded or accounted for in the design, and the analytic approach to estimating direct and interaction effects. In doing...
Source: https://osf.io/fg84d/
0
0.0
Oct 30, 2021
10/21
by
ANdrada Vincze; Dragos Iliescu; Răzvan Jurchiș
data
eye 0
favorite 0
comment 0
Quiet Eye (QE) is the final ocular fixation before the athlete initiates a specific movement and it has been established as a robust contributor to performance (Vickers, 2007, Klostermann,2013). However, all the existing results address either laboratory tasks (i.e., throwing a ball) or isolated sport motor tasks (i.e., darts). This study goes beyond these types of tasks and investigates whether QE contributes to table tennis performance in real matches. To this end, we simulated a high stake...
Source: https://osf.io/2uq8g/
48
48
Jul 22, 2013
07/13
by
Adrian Andrada; Anna Fino; Luigi Vezzoni
texts
eye 48
favorite 0
comment 0
We obtain some general results on Sasakian Lie algebras and prove as a consequence that a (2n + 1)-dimensional nilpotent Lie group admitting left-invariant Sasakian structures is isomorphic to the real Heisenberg group $H_{2n + 1}$. Furthermore, we classify Sasakian Lie algebras of dimension 5 and determine which of them carry a Sasakian $\alpha$-Einstein structure. We show that a 5-dimensional solvable Lie group with a left-invariant Sasakian structure and which admits a compact quotient by a...
Source: http://arxiv.org/abs/0807.1800v2
1,358
1.4K
Jun 26, 2014
06/14
by
Andrada, Miguel Leitão de, 1553-1632
texts
eye 1,358
favorite 0
comment 0
24
24
Aug 8, 2020
08/20
by
Tellería, María; Salgado, Cristina; Andrada, Ana
texts
eye 24
favorite 0
comment 0
46
46
Sep 21, 2013
09/13
by
Adrian Andrada; Maria Laura Barberis; Isabel Dotti
texts
eye 46
favorite 0
comment 0
We study the structure of Lie groups admitting left invariant abelian complex structures in terms of commutative associative algebras. If, in addition, the Lie group is equipped with a left invariant Hermitian structure, it turns out that such a Hermitian structure is K\"ahler if and only if the Lie group is the direct product of several copies of the real hyperbolic plane by a euclidean factor. Moreover, we show that if a left invariant Hermitian metric on a Lie group with an abelian...
Source: http://arxiv.org/abs/1106.6268v1
6
6.0
Jun 29, 2018
06/18
by
Adrián Andrada; María Laura Barberis; Andrei Moroianu
texts
eye 6
favorite 0
comment 0
We study 4-dimensional simply connected Lie groups $G$ with left-invariant Riemannian metric $g$ admitting non-trivial conformal Killing 2-forms. We show that either the real line defined by such a form is invariant under the group action, or the metric is half conformally flat. In the first case, the problem reduces to the study of invariant conformally K\"ahler structures, whereas in the second case, the Lie algebra of $G$ belongs (up to homothety) to a finite list of families of metric...
Topics: Differential Geometry, Mathematics
Source: http://arxiv.org/abs/1602.02001
41
41
Sep 19, 2013
09/13
by
A. Andrada; M. L. Barberis; G. Ovando
texts
eye 41
favorite 0
comment 0
In this work we study a particular class of Lie bialgebras arising from Hermitian structures on Lie algebras such that the metric is ad-invariant. We will refer to them as Lie bialgebras of complex type. These give rise to Poisson Lie groups G whose corresponding duals G* are complex Lie groups. We also prove that a Hermitian structure on the Lie algebra $\mathfrak{g}$ with ad-invariant metric induces a structure of the same type on the double Lie algebra ${\mathcal D}\mathfrak{g}=...
Source: http://arxiv.org/abs/math/0610415v1
University of Toronto - Robarts Library
1,259
1.3K
Jun 8, 2010
06/10
by
Silva, José Bonifacio de Andrada e, 1763-1838; Silva, José Bonifacio de Andrada e, 1827-1886
texts
eye 1,259
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comment 0
Más detalles PUBLICACIÓN Sevilla : En la Imprenta de Alonso de la Barrera, 1599 DESCR. FÍSICA 8 h., 182 f., 1 h.: il.; 4º Indexed In: Wagner, K. BU. Sevilla. España y Portugal DESCR. FÍSICA Sign.: [Cald.]8, A-Z8 Subject Caballos -- Cría y explotación -- Obras anteriores a 1800 IMPRESOR Barrera, Alonso de la imp. CLASIF. ABREV. 636 LUGAR IMPRES. España Sevilla SIGNATURA A Res.32/5/11 Catálogo Fama
Topics: Fondo Antiguo, Libros del Siglo XVI
47
47
Oct 29, 2014
10/14
by
Saftoiu, Adrian; Ciobanu, Lidia; Seicean, Andrada; Tantau, Marcel
texts
eye 47
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This article is from BMC Gastroenterology , volume 13 . Abstract Background: Hemorrhagic complications during EUS-guided pseudocyst drainage can occur, because the vessels on the internal wall of the pseudocyst might be compressed by the fluid and thus not visible on color Doppler or even power Doppler EUS. Case presentation: We report a case of an immediate internal spurting arterial bleeding precipitated during EUS-guided pseudocyst drainage which stopped instantaneously by placement of a...
Source: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3665445
45
45
Sep 18, 2013
09/13
by
A. Andrada; M. L. Barberis; I. G. Dotti
texts
eye 45
favorite 0
comment 0
Given an almost complex manifold (M, J), we study complex connections with trivial holonomy and such that the corresponding torsion is either of type (2,0) or of type (1,1) with respect to J. Such connections arise naturally when considering Lie groups, and quotients by discrete subgroups, equipped with bi-invariant and abelian complex structures.
Source: http://arxiv.org/abs/1102.1698v1
58
58
Sep 22, 2013
09/13
by
A. Andrada; M. L. Barberis; I. G. Dotti
texts
eye 58
favorite 0
comment 0
We classify the 6-dimensional Lie algebras that can be endowed with an abelian complex structure and parameterize, on each of these algebras, the space of such structures up to holomorphic isomorphism.
Source: http://arxiv.org/abs/0908.3213v4
Cote du document : DELTA 53975 FA [1-1 bl.-1-1 bl.]-40 p. ; 22 cm. Notes ms. de Ferdinand Denis en début et en fin de vol. Notice Sudoc
Topics: Fonds Ferdinand Denis (imprimés), Esclavage -- Brésil -- 19e siècle
Source: Bibliothèque Sainte-Geneviève, DELTA 53975 FA
57
57
Sep 21, 2013
09/13
by
A. Andrada; M. L. Barberis; I. Dotti; G. Ovando
texts
eye 57
favorite 0
comment 0
It is the aim of this work to study product structures on four dimensional solvable Lie algebras. We determine all possible paracomplex structures and consider the case when one of the subalgebras is an ideal. These results are applied to the case of Manin triples and complex product structures. We also analyze the three dimensional subalgebras.
Source: http://arxiv.org/abs/math/0402234v1
11
11
Oct 9, 2019
10/19
by
María E. Gil; Ana C. Andrada; Cecilia N. Pellegrini
texts
eye 11
favorite 0
comment 0
Más detalles PUBLICACIÓN [S.l. : s.n., 1621?] DESCR. FÍSICA 21 h. ; Fol NOTA AL TIT. Texto firmado por Manuel Ruyz de Aguado Tít. tomado de principio del texto NOTA A PUBLIC. En v. de h. 2 consta "mil y seyscientos y veynte y uno" [1621] DESCR. FÍSICA Sign.: A-I2, K4 En cabecera grab. xil. Anagrama de la Compañia de Jesus OTRO AUTOR Freyle de Andrada, Ines Solis, Fernando de SIGNATURA A 111/065(61) Catálogo Fama
Topics: Fondo Antiguo, Libros del Siglo XVII, Tomos de varios, Porcones. Alegaciones Jurídicas. Pleitos
Más detalles PUBLICACIÓN [S.l. : s.n., 1601-1700] DESCR. FÍSICA 6 h. ; Fol. Sign.: A6 ILUSTRACIONES Port. con esc. xil. de la Compañía de Jesús OTRO AUTOR Cabrera de Cardenas, Iuan Lorenço de Andrada, Antonio SIGNATURA A FD/0104(10) Catálogo Fama
Topics: Fondo Antiguo, Libros del Siglo XVII, Tomos de varios, Porcones. Alegaciones Jurídicas. Pleitos
15
15
Jul 6, 2021
07/21
by
Andrada, Aldo Rubén; Lozzia, M E; González-Olazo, E; Heredia, Federico
texts
eye 15
favorite 0
comment 0
2
2.0
Nov 30, 2021
11/21
by
Tebbitt, M C; Andrada, A R; Kollmann, L J C; Moonlight, P W
texts
eye 2
favorite 0
comment 0
615
615
Oct 25, 2012
10/12
by
Xavier, M., 1798-1865; Alvares de Andrada, Francisco Ladislau, [from old catalog] tr
texts
eye 615
favorite 0
comment 0
26
Topic: Silva, José Bonifacio de Andrada e, 1763-1838
6
6.0
Nov 30, 2021
11/21
by
Tebbitt, M C; Andrada, A R; Bulacio, E; Parada, G A; Ayarde, H
texts
eye 6
favorite 0
comment 0
13
13
Jul 6, 2021
07/21
by
Andrada, A R; Usandivaras, G M Silenzi; Bigliardo, G E; Romero, M; Dode, M
texts
eye 13
favorite 0
comment 0
